Typewriter



Dec. 7, 1937. T Rl ARDEN 2,101,231

TYPEWHITER Filed Dec. 21, 1935 4 Sheets-Sheet l @32" 1. i5 \8 Z0 i56' \g/19 A TTORNE YS.

Dec. 7, 1937. v T. R. ARDEN 2,101,231

TYPEWRITER Filed Dec. 21, 1935 4 Sheets-Sheet 2 Dec. 7, 1937. T. R.ARDEN 2,101,231

TYPEWRITER Filed Dec. 2l, 1935 4 Sheets-Sheet 3 m www@ BY ATTORNEYS.

Dec. 7, 1937. T. R. ARDEN 2,101,231

TYPEWRITER Filed Dec. 2l, 1955 4 Sheets-Sheet 4 ammwm@ Patented 7, 1937arman UNITED STATES narrar orties n amaai I rhum Raymond men, Baldwin,N. r.,- signor to Nic Proiector Corporation, New York, N. Y., acorporation ofl New York Application December 2l, 1935, Serial No. 55,608 Y 8Claims.

My invention relates to a new and improved typewriter. i

One of the objects of my invention is to provide a new and improved toytypewriter, of the type which employs a printing wheel.

Another object of my invention is to provide mechanism for turning theprinting wheel, by

means of a movable member which is independent of the carriage of theprinting wheel.

Another object of my invention is to provide a shaft which is mounted inthe frame of the typewriter and whose movement turns the printing wheelaround its own axis.

Another object oi'l my invention is to provide means for holding theribbon ofthe typewriter in operative position, relative to thelongitudinally shiftable printing wheel. Y ...in

Another object of my invention is to prde improved mechanism foractuating the pitmg wheel towards and away from the printing position,and to provide improved mechanism f o r longitudinally shifting theprinting wheel for spacing purposes, either simultaneously with theprinting movement, or independently thereof. Whenever I refer to aprinting wheel, I wish to include a printing member of any type, which'may be shifted in any manner so as to move the desired character ornumber to printing posi-y tion.

Other objects of my invention will be set forth s in the followingdescription and drawings which illustrate a preferred embodimentthereof, it being understood that the above statement of the objects ofmy invention is intended generally to explain the same without limitingit in any manner.

Fig. 1 is a top plan view of the improved typewriter.

Fig. 2 is a is partially broken away so as tain of the parts.

Fig. 3 is a side elevation taken at the left,- hand side of Fig. 1.

Fig. 4 is a rear elevation of Fig. 1. f

Fig. 5 is a sectional view on the line 5--5 of Fig. l.

Fig. 6 is' a detail elevation, partially in section, and with certain ofthe parts broken away,

to illustrate cerfront elevation of Fig. 1. This view illustrating theprinting wheel and certain important accessory parts.

Fig. 'I is a sectional view on the line 1-1 of Fig. 6.

Fig. 8 is Fig. 6.

al sectional View on the line 8--8 of Fig. 9 is a partial top plan viewof Fig. 1, said view being partially in section, the character plate ofthe frame having been removed.

Fig. 10 is a sectional View on the line illi0 of Fig. 4.

Fig. 11 is a top plan view of the printing wheel.

The improved device comprises a frame F which can be stamped from anysuitable metal. The bottom wall and the rear wall and the side walls ofsaidframe are integral with each other.

A character plate i serves to cover a portion of the frame. Saidcharacter plate i has lips 2 which extend over the side walls of theframe F. Said lips 2 are connected to the side walls of the frame F, bymeans of fastening members 3.

, The plate i has representations 4 of the various characters, numbersand the like.

Asnshown in Figs. Land 5, the plate l may be stampedso as to providecup-shaped members 5 whose edges or rims are raised abovel the topsurface of the plate i. The representations 4 can be formed in saiddepressions by means ofpainting or by pasting suitable inserts or thelike..

The platen 6 is of the usual type, and it is provided with a coveringsleeve 'i made of rubber or other suitable material. Said platen ismountednpon a shaft 8, which may be replaced by relatively short studshafts, which enter recesses in said platen 6. The shaft vil is mountedin suit'- able bearings which are provided in the side walls of theframe F.

The platen can be turned in the usual manner by means of members 9.which are suitably secured to the shaft or shafts 8.

As shown in Fig. 1, one of the side walls of the frame, such as theright-hand side, may be provided with an annularrow of cup-shapedprojections ili, which are embossed out of the material of said wall.

As shown in Fig. 10, a. lmetal disc Il can be x'ed to an end wall of theplaten t. Said metal discV il is provided with a projecting arm I2,having a ball-shaped projection I4. This arm i2 is resilient, and theball-shaped projection I4 enters the cup-shaped recesses which areformed by stamping out the projections l0. This arm `provides areleasable detent, so that the platen is heldyieldingly in position.

'I'he platen is also associated with a movable which are provided in theside walls of the frame F. Said bar I5 is provided with a handle I6,

.and a spring I1 maintains said bar IB-pressed against the covering ofthe platen.

As shown in Figs. 3-5, the device is also provided withy the usualrubber sleeves I8, which are mounted upon a shaft I9.

As shown in Fig. 4, the rear wall of the frame F is provided with anextension plate 20. As shown in Fig. 4, the side walls of the frame areprovided with lips 2l which are bent over the rear wall of the frame.

The lips 2i are connected to the rear Wall of the frame, at the upperedge of said rear wall, by means of rivets or other fastening members22. The lips 2I are also located at the rear surface of the extensionplate 20 and fastening members 23 connect said extension plate 20rigidly to the lips 2I.

The extension plate 20 is provided with cutouts so that the rubbersleeves I8 may have frictional contact with the covering of the platen6, so that the platen 6 and the sleeves I8vand the shaft I9 turn inunison.

As shown in Fig- 4, the rear wall of the frame F is provided with upwardextensions 24, which are bent into cylindrical form, so as to provide abearing for the shaft I9, and to space the sleeves I8.

The metal index bar 25 has the angular shape which is shown in Fig. 5and the rear edge of s aid index bar 25 is curved into a bead. The indexbar 25 is provided with end lugs 26, which are connected by means ofrivets or other suitable fastening means 21 to the side walls of theframe. Said fastening members 21 also rigidly connect the slotted ribbonsupports 28 to the side walls of the frame.

The front wall of the index bar 25 is embossed So as to form a series ofrecesses 29, which are shown in Fig. 2 and also in Fig. 8. Theserecesses form a series of rack-teeth. As shown in Fig. 2, each of saidrecesses has a straight edge and a curved edge, in front elevation.

The rack-teeth formation which is provided by said recesses is clearlyshown in Fig. 8. As shown in Fig. 11, the printing member 36 may be a.disc, which is provided upon its periphery with any suitable number ofintegral printing characters 3l. The printing members 3l can consist ofseparate type members, which may be aixed in any suitable manner to theperiphery of the printing wheel 30. Said printing wheel 30 is providedwith a hub 32, and a set screw 33 connects said hub to a shaft 34.

As shown in Fig. 6, a gear 35 is keyed to the shaft 34. The gear 35meshes with a. driving gear 36, which is mounted upon a sleeve or hollowshaft 31.

As shown in Fig. 6, the interior surface of said hollow shaft 31 has anon-circular cross section. In this particular embodiment, said interiorsurface has a square cross section. Said hollow shaft 31 islongitudinally slidable upon a shaft 38, which also has a square crosssection, so that the shafts 31 and 38 turn in unison.

As shown in Fig. 1, the right-hand end of the shaft 38 is provided witha reduced cylindrical end which is externally threaded and which extendsthrough a circular opening in the adjacent side wall of the frame F.Said opening is smaller than the end-wall of shaft 38. A nut 39mainstamped metal.

tains the assembly between the reduced righthand end of the shaft 38 andthe adjacent side wall of the frame F, while permitting the shaft 38 toturn freely.

As shown in Fig. 1, the left-hand end of the shaft 38 extends through acircular opening in the adjacent side wall o-f the frame F, said openingbeing suiciently large to permit the free turning movement of the shaft38.

A removable and knurled member 40 has a friction fit upon the projectingleft-hand end of the shaft 38.

A longitudinally movable carriage is provided for the printing wheel andcertain associated parts. This carriage is preferably made of Saidcarriage is provided with a lip 4I, a first web 42, a second web 43, anda third web 44 which is provided with an inclined projection 45, havinga lip 46. These parts of the carriage are integral, so that they can bemade by stamping a single sheet of metal into the desired shape. The web44 and the inclined projection 45 .may be .stamped so as to providestrengthening ribs 41. The lip 46 can likewise be stamped so as toprovide a strengthening rib 48. A supplemental web 49 is soldered orriveted to the web 45 and this supplemental web 49 is provided with alip 50.

The web 42 is provided with upstanding lugs 5I, to which a pair of arms52 are detachably connected by means of screws or other fasteningmembers 53. Web 44 has downwardly turned lugs similar to lugs 5I. Arms52 are connected to the lugs of web 44 by fastening members 55. Web 44has an additional downwardly` turned lug, to which arm 58 is connectedby pivot pin 59. Arm 58 has a detent 60 which meshes with the teeth ofgear 36. Spring 6I is connected to arm 58 and to web 44, so that detent60 yieldably engages gear 36 to hold said gear releasably after it hasbeen turned so as to move the desired printing member 3| into operativeposition.

The sleeve or hollow shaft 31 is supported between the arms 52 and inthe perforations of the bottom portions of said arms 52. Said sleeve 31and said arms 52 move longitudinally in unison. Said sleeve 31 and arms52 also rock in unison when plate 16 is operated. The sleeve 31 may fitfrictionally in the perforations of said arms 52,

The upper ends of the arms 52 are integral with a cut-out annular member56, the cut-out portion of said member 56 permitting the printingmembers 3| to be pressed against the ribbon R 'of the typewriter. i Thetop surface of the member 56 is provided with an index scale, as shownin Fig. 1. Likewise the upper end of the shaft 34 is provided with apointer 51, in order to indicate the operative position of therespective printing character. For example, in the position shown inFig. 1, the character 3 is in the printing position.

The annular cut-out member 56 is provided with an integral lug 62.

A lug 63 is integral with an arm 64, which is bent downwardly andangularly so as to provide a web 65, which is turnably mounted adjacentthe web 42. A collar 66 extends through an opening in the web 42 and thebottom of said collar is wider than said opening in the web 42. Saidcollar extends upwardly through an opening in the web 65 and the upperend of said collar 66 is enlarged so as to hold the web 65 turnablyrelative to the web 42.

A rack-member 61 is slidably mounted in an opening of the web 43. Saidrack-member 61 is I located `at the underside of the web 42.A Said web42 is provided with a slot. A pin 68 is connected -to an upstanding lugof the web 42.

AHence the rack-member 61 is yieidingly maintained by spring 69, in aposition in which it engages withtheI recesses 29. When the arm 64 isturned towards the fixed lug 62, the teeth of the rack-member 61 arereleased from the teeth 29 of the index bar. In the position shown inFig. 8. web 65 is turned counter-clockwise, in order to release theteeth of rack-member 61 from the teeth 29 of bar 25.

An arm 18 is located below web 42 and it is pivotally connected at 1| tosaid web 42. A spring 13 is connected at one end to a lug of the web6,5, and the other end of said spring 13 is connected to the upstandinglug 14 of the arm 10.

The upstanding lug 14 of the arm 18 extends upwardly through a slot ofthe web 42 and said upstanding lug abuts or is close to a projectionl 15of the web 65 in the position shown in Fig. 8. The edge of saidprojection 'l5 which is adjacent lug 14 has a curved or cam surface.Hence, when the arm 64 is turned in the counter-clockwise direction,referring to Fig. 8, the arm 18 is turned counter-clockwise by the camsurface of projecl A plate 16 is provided with integral triangular endpieces 11, which are connected by pivot pins 18 to the side walls of theframe. Said plate 16 is stamped so as to provide a curved extension 19which is located between the lips 46 and 58. A spring 88 is connected toone of the end pieces 11 and to a pin which is fixed to the adjacentside wall of the frame. Said plate 16 is provided with integral flanges8|, whose Shanks 16a extend upwardly'through a suitableV slot 82 of thecharacter plate l.

Hence, when either or both of the members 8| are depressed, the plate 16is turned in the clockwise direction, referring to Fig. 5, and thecarriage on which the printing wheel is mounted is rocked in thecounter-clockwise direction, thus pressing the selected printingcharacter against the ribbon R. The shaft 38 then rocks in unison withthe carriage of the printing wheel, so that said shaft forms arock-support for said carriage.

A spacing plate 83 is provided with a shank 85, the lower part of whichextends through a slot which is formed in the plate 16. Said plate 83 isalso provided with an extension 81 which is connected by tongues 84 tothe plate 16. Said connection can be provided by passing said tongues 84of the plate 481 through slots which are provided at the plate 16, andthen bending` such tongues.

. A spring 98 is connected to a lug of the front wall of the shank 16aand, to the underside of the member 83. Hence when the plate 83 ispressed downwardly the plate 16 is rocked in the clockwise direction(referring to Fig. 5). The bottom of the lmember 85 strikes against thebottom plate of the frame, so that the turning movement of the plate 16is less when the member 83 is actuated, than when the members 8| areactuated. That is, the tongues 84 permit a certain relative turningmovement A. between plates 16 and 81. When the members 8| are actuated,the

plate 83 'can ride upwardly with respectto the 5 flange 16a of the plate16.

When the plate 16 is rocked by depressing members 8|, the carriage ofthe printing wheel is rocked so as to effect printing, as previouslystated. 10

The ribbon R is slidably4 guided between lugs or guide members 98 and9|, which are suitably secured to the member 56, so that the operativepart of the ribbon is heldin 'curved form, which vcorresponds to theperiphery of the printing 15 member.

The operation of the device is as follows:-

'I'he carriage of the printing wheel is freely shiftable from left toright. Said carriage cannot be shifted from right to left until the arm64 has been turned in the counter-clockwise direction, (referring toFig. 8) so as to release the members 61 and 18 from the stationaryrackteeth 29 of theindex bar 25.

The printing position is indicated by the central member 98 of themember 56.

The operator turns the shaft 34, thus turning gear 35 and gear 36 so asto turn shaft 38 and sleeve 31, while the carriage is in the positionshown in Fig. 5, until the pointer 51 is aligned with the selectedcharacter upon the index scale of the member 56. While there issufficient friction between'sieeve 31 and arms 52 to cause sleeve 31 torock in unison with the 'carriage when plate 16 is operated, sleeve 31can turn relative to arms 52. The operator then tunis the plate 16against the force of the spring. 88, by pressing upon one or bothmembers 8|.

The carriage of the printing wheel now turns in unison with the shaft38, so that the printing wheel is not turned about its own axis, whenthe carriage of the printing wheel is rocked. If shaft 38 were heldstationary while the carriage was rocked, gear 35 would be turned.However, since the intermeshing .teeth of gears 35 and 36 are movedthrough the same arc, when the carriage is rocked, by operating plate16, said rocking doesnot turn gear 35.

'I'he position of the parts shown in Fig. 8 corresponds to the normalposition of the plate 16 which is illustrated in Fig. 5. In suchposition, the point of the arm 18, and the teeth of the rack-member 61,do not contact with the inner surfaces of the stationary rack-teeth 29.Likewise, and as shown in Fig. 8, the inner point of 4the arm 18 islongitudinally offset, relative to the pivot 1| of said arm 18.

Hence, when thel plate 16 is rocked so as to rock the carriagev of theprinting wheel, the inner point of the arm 18 is pressed against thesurfaces of the rack-teeth 29, which tends to cause said arm 18 to turnin the counter-clockwise direction against the force of the spring 13,in the position of the parts which is illustrated in Fig. 8.

The carriage of the printing wheel 'cannot turn, save for the rockingmovement which is produced by the movement of the plate 16. Hence thetorque which is impressed upon the arm 18 causes the carriage to beshifted from 70 leftto right, for a distance corresponding to the spacebetween a pair of the stationary rack-teeth 29. This longitudinalshifting is permitted by the rack member 61.

Likewise said rocking movement of the print- 15 ing wheel causes theteeth of the rack member 6l to be pressed yieldingly against thestationary rack-teeth 29, thus preventing any overrunning movement ofthe carriage of the printing wheel,

and limiting said longitudinal movement to a distance which is equal tosaid spacing of the rack-teeth 29.

At the completion of `he rocking movement of the carriage and afte saidcarriage has been shifted from left to right through said predetermineddistance, the character is pressed against the ribbon and the ribbon ispressed against the sheet of paper which is on the platen so that theprinting is performed after the carriage has been shifted from left toright, through said spacing distance.

When the members 8l are released, the spring moves the plate 16 back tothe normal position which is shown in Fig. 5, and the curved extension19 of the plate 16 then rocks the carriage back to the normal positionwhich is illustrated in Fig. 5. The operator then turns the shaft 38 soas. to select another character and the printing operation is thenrepeated.

If it is desiredto move the carriage from left to right Withoutprinting, this can be done by depressing the member 83, until the memberstrikes against the bottom plate of the frame, or any suitable stop.

Therocking movement of the plate 'I6 which is caused by depressing themember 83, is of less amplitude than the rocking movement which isproduced by depressing the members 8|. Hence, when the member 83 isdepressed, the carriage of the printing wheel will be shifted throughsaid spacing distance, but without rocking the carriage of the printingwheel sufliciently to produce printing or typing.

If it is desired to move the carriage from right to left, the operatormoves`the lug 63 towards the lug 62, thus moving the rack member B1 andthe arm 10 to their inoperative positions.

It is obvious that the device can-be made almost wholly from stampedmetal and that it comprises a minimum number of parts so that the devicecan be cheaply manufactured.

While I have shown a complete typewriter, it is obvious that theinvention presents numerous valuable sub-combinations which can be usedindependently of the complete combination set forth herein.

The device shows an adjustable printing member having means adapted tosupport the same for longitudinal sliding movement, and also formovement towards and away from the platen. Said means may be a singledevice as specifically shown in this embodiment, or it may include aplurality of devices. Likewise the improved device shows means mountedon the frame and adapted to shift the printing member so as to move aselected character thereof into printing position relative yto theplaten.

Whenever I refer in this connection to the frame, I refer to any part ormember which is not moved longitudinally in unison with the longitudinalsliding movement of the printing member.

For convenience I have used reference numerals in some of the claims.However, it is to be understood that by using such reference numerals, Ido not wish to be limited to the parts or details which are illustratedin the preferred embodiment.

The position of the carriage in which a character of the printing memberpresses against the ribbon and in which the ribbon is forced against thepaper which is on the platen, may be designated as the printing positionof the carriage.

Referring to Fig. 8, it will be noted that the l pivot -'Il islongitudinally offset relative to the left-hand end of the arm 18, sothat said end contacts with a fixed part of the frame, before theprinting member is moved to its printing position.

In the specific embodiment shown, said fixed part of the frame has rackteeth.

Referring to Fig. 8, this illustrates what may be designated as thenormal position of the carriage of -the printing member, said positionbeing also illustrated in Fig. 5.

As shown in Fig. 8, the teeth of the rack member 61 mesh only partiallywith the rack teeth 29 of the frame, in said normal position. Saidpartial meshing is sufficient to prevent the carriage from beingmoved.to'the left, unless the rack member 61 is moved away from the rackteeth by the manually operated means.

'I'he member 68 serves as a stop so as to prevent full meshing orcontact between the rack member 61 and the rack teeth 29, in said normalposition. In said normal position the left-hand end of the arm 10 also4meshes only partially with thev rack teeth 29. Said partial meshing issufficient to cause the left-hand end of the arm 10 to contact.

with the tips of the rack teeth 29, if it is attempted to movethe-carriage to the left. However, the manually operated meanssimultaneously slide the rack member 61 and turn the arm 'l0 so that themembers 61 and 10 are moved wholly out of mesh with the rack teeth 29,thus permitting the free sliding movement of the carriage towards theleft-hand end of the platen.

While I have shown a relativey short ribbon R, it would not be departingfrom the invention if said ribbon R were mounted on spools of the usualtype.A

It will be noted that the carriage of the printing member is slidablerelative to the ribbon and that a portion of the ribbon is held incurved form by means of the guides and 9i. Said curved part of theribbon may have a curvature which approximates the curvature of theprinting member 30. The curvature of said part of the ribbon may be thesame as the curvature of the printing member 38, although this is notnecessary.

I have shown a preferred embodiment of my invention, but it is clearthat numerous changes and omissions can be madewithout departing fromits spirit.

I claim:

1. In a typewriter having a frame and a platen, a shaft mounted in saidframe, a carriage mounted on said shaft, said carriage being rockable inunison with said shaft and said shaft being turnable relative to saidcarriage, said carriage being longitudinally slidable relative to saidshaft, a movable printing member located on said carriage and having aplurality of characters thereon, and connecting mechanism intermediatesaid shaft and said printing member, said connecting mechanism beingadapted to actuate said printing member when the shaft is turned, so asto bring a selected character of said printing memberinto printingposition relative to said platen.

2. In a typewriter having a frame and a platen, a shaft mounted in saidframe, a carriage mounted on said shaft, said carriage being rockable inunison with said shaft and said shaft being turnable relative to saidcarriage, said carriage being longitudinally slidable relative to saidshaft, a

and having a plurality of characters thereon, and

connecting mechanism intermediate said` shaft and said printing member,said connecting mechanism being adapted to actuate'said printing memberwhen the shaft is turned, so as to' bring a selected character of saidprinting member into printing position relative to said platen, andavrock member connected to .said frame, said rock member being adaptedto rock said carriage when said rock member is-actuated. v

3. In a typewriter having a frame and a platen, a shaft mounted in'said' frame, a carriage mount-- ed ongsaid shaft, said'carriag'e beingrockablein unison with said shaft and said sha'it` being turnablerelative to said carriage, said carriage being longitudinally slidablerelative to said shaft, a movable printing member located o'n saidcarriage and having a plurality of characters thereon,

and connecting mechanism intermediate saldiA shaft and said printingmember, said connecting mechanism being adapted to actuate said printingmemberwhen the'shaft is turned, so,asto bring a selected character ofsaid printing member into printing position relative to said platen,said carriage having spaced lips, and a rock member connected tosaidframe and having a portion thereof located between said lips. l

4. In a typewriter having a frame and a platen, a first shaft mounted insaid frame, a sleeve Ymounted on said first shaft, said sleeve beingrockable in unison with said first shaft and being` longitudinallyslidable relative to said first shaft, a gear connected to'said .sleeveand movable in unison therewith, a carriage,v means connecting saidcarriage to said sleeve so that the carriage can move in unison withsaid sleeve, said first shaft and said sleeve being turnable relative tosaid carriage, an upstanding shaft mounted in said carriage and havingasecond gear which meshes with the first-mentioned gear, a printingmemberconnected to said shaft and turnable therewith, and mechanism forrocking said carriage and first shaft in unison so that the printingmember moves towards and away from the platen. Y I

5. In a typewriter having .a frame and a platen, a printing member, acarriage adapted to support said printing member for longitudinalmovement and alsofor movement towards and away from said platen, apivoted arm connected to said carriage, said arm being of sumcientlength so that an end of said arm contacts with a fixed portion of theframe during the movement of the printing member towards said platen andbefore said printing member arrives at the printing position, thepivotal connection of said arm to said carriage being longitudinallyoffset relative to said end of said arm, so that the'movement of thecarriage towards the platen causes said arm to shift said carriagelongitudinally before said printing member arrives at the printingposition, the fixed part of the frame having rack teeth which are shapedto cooperate with the end of.

said arm, said carriage also having a rack mernber movably connectedthereto and adapted to contact with said rack teeth of the frame,springmeans mounted `on said carriage and adapted to urge said rackmember towards the rack teeth of the frame, theteeth of the rack membermeshing Aonly partially with the rack teeth of the frame when theprinting member is in its normal position, said carriage also havingmanually operable means for moving said rack member away from the rackteeth of the frame.

6. A typewriter havinga frame and a platen, a rock shaft 38 mounted in'said frame, a sleeve 31 mounted on said rock shaft, said sleeve 31 beingrockable in unison with 'said rock shaft 38, said sleeve 31 beinglongitudinally slidable on the rock with the iirst gear 3.5, a printingmember mounted i on the upstanding shaft 34, said frame having. a

longitudinal row of rack teeth 29, a rack member 61- slidablyconnected--to said-carriage, said rack member 61 being movable towardsand away from carriage and connected to said racltmember 61 andoperative tourge said rack member 61 towards the rack teeth 29,stopmeans adapted to limit the sliding movement of the rack member ltherack teeth 29, a spring 69 /connected to said l 31 relative to saidcarriage and in a direction towards said rack teeth 29, an arm 18pivotedto said carriage, a spring 13 connected to said carriageand'connected to said arm 10, and adapted to turn said arm 10 so that anend thereof ismoved towards said rack teeth 29, a manually operablemember 65 pivotally connected to said carriage and adapted to move therack member 61 away from the rack teeth 29 and to turn the arm 10 sothat said end of the arm 1U is' moved away from the rack teeth 29, thearm liibeing connected to said carriage by a pivot 1| which islongitudinally offset relative to said end of the arm -said normalposition of the carriage. y 7. In a typewriter having a frame and aplaten,

a rock shaft 38 mounted in said frame, a sleeve 31 mounted on said rockshaft 38 and rockable in unison with said rock shaft 38, said sleeve 31being slidable on the rock shaft 38, upstanding arms 52 connected tosaid sleeve 31, a carriage member located between and connected to saidupstanding arms 52, said carriage member having first and second spacedwebs 42 and 4B winch have an intermediate web 43, said second web 44having an extension web d5, said extension web 45 having a first lip 46,a supplemental member 49 which is connected to the extension web 45,said supplemental member 49 having a second lip 50, a rock memberconnected to the frame and having an extension 19 which is locatedbetween the first and second lips 46 and 5U, said rock member be- -ingmanually operable and having a spring 80 which holds said rock memberyieldingly in a predetermined position, a second shaft 34 mounted v insaid first and second webs 42 and 44, a printing member connected tosaid second shaft 34, a rst gear 35 connected to the second shaft 34, asecond gear 36 connected tothe sleeve 31 and meshing with the first gear35, the frame having a. longitudinal row of rack teeth 29, the rst web42 having a rack member 61 Aslidably connected thereto, a spring69'connected to the rack member 61 and to the rst web 42 and adapted tomove the rack member 61 towards the rack teeth 29, an

arm 10 pivotally connected to the i'lrst web 42 at 1|,` said afm 10having an end which meshes only partially with the rack teeth 29 whensaid rock member is in its normal position, the teeth of the rack member61 also meshing only partially with the rack teeth 29 in said normalposition of the rock member, the rst 4web 42 and the rack member 61having cooperating stop means for limiting the movement of the rackmember 61 relative to the first web 42 and towards the rack teeth 29,the rst web 42 and the arm l0 having cooperating stop means adapted tolimit the movement of said end of the arm 'l0 towards said rack teeth, amember 65 pivotally connected to the rst web 42, said member 65 havingseparated portions adapted to move the rack member 61 away from the rackteeth 29 and to turn the arm 'Ill so that said end thereof is moved awayfrom said rack teeth 29 when the member 65 is turned, the pivot 'H ofthe arm 10 being longitudinally offset relative to said end thereof,said end of the arm 10 andthe teeth of the rack member 61 being onlypartially in mesh with the rack teeth 69 when said rock member is in itsnormal position.

8. A typewriter having a frame and a platen, a carriage slidably mountedon a member which is connected to said frame, said carriage being alsomovable towards and away from the platen, an annular and turnableprinting memberfmounted on said carriage, a ribbon, said carriage havingguide means through which the ribbon passes, said carriage beingslidable relative to said ribbon, said guide means being adapted to holdthe corresponding portion of said ribbon in curved form.

THOMAS RAYMOND ARDEN.

